Mark Lester 
Practice Makes Perfect English Verb Tenses Up Close [EPUB ebook] 

Solve the mysteries of English verbs Practice Makes Perfect: English Verb Tenses Up Close puts the spotlight on this tricky grammar trouble spot. It boasts plenty of opportunities for practicing your language skills, as well as extensive examples based on a conversational style that will keep you engaged. The book also features a unique answer key that gives you more than just a listing of correct answers; it clues you in on the "why" behind them. Combine those features with the renowned Practice Makes Perfect format and you have the ideal reference/workbook to learn to speak and write English with fluency.